EP1566914A3 - Method to improve the quality of a voice transmission over an air interface - Google Patents

Method to improve the quality of a voice transmission over an air interface Download PDF

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Publication number
EP1566914A3
EP1566914A3 EP05100034A EP05100034A EP1566914A3 EP 1566914 A3 EP1566914 A3 EP 1566914A3 EP 05100034 A EP05100034 A EP 05100034A EP 05100034 A EP05100034 A EP 05100034A EP 1566914 A3 EP1566914 A3 EP 1566914A3
Authority
EP
European Patent Office
Prior art keywords
air interface
quality
improve
voice
transmission over
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05100034A
Other languages
German (de)
French (fr)
Other versions
EP1566914A2 (en
Inventor
Jürgen Heitmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unify GmbH and Co KG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1566914A2 publication Critical patent/EP1566914A2/en
Publication of EP1566914A3 publication Critical patent/EP1566914A3/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0059—Convolutional codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Erfindungsgemäß wird zum Verbessern der Qualität einer Sprachübertragung über eine zur Sprachdaten- und Allgemeindatenübertragung (DAT) vorgesehene Luftschnittstelle (LS) zunächst geprüft, ob die über die Luftschnittstelle (LS) zu übertragenden Daten (DA, DB, DAT) Sprachdaten (DA, DB) sind. Falls dies zutrifft, wird ein für Sprachübertragung spezifisches Vorwärtsfehlerkorrekturverfahren zugeschaltet, das auf die Sprachdaten (DA, DB) im Rahmen ihrer Übertragung über die Luftschnittstelle (LS) angewandt wird.

Figure imgaf001
According to the invention, to improve the quality of a voice transmission via an air interface (LS) provided for voice data and general data transmission (DAT), it is first checked whether the data (DA, DB, DAT) to be transmitted via the air interface (LS) comprises voice data (DA, DB). are. If so, a forward voice error correction method specific to voice transmission is applied, which is applied to the voice data (DA, DB) as part of its transmission over the air interface (LS).
Figure imgaf001
EP05100034A 2004-02-18 2005-01-05 Method to improve the quality of a voice transmission over an air interface Withdrawn EP1566914A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004007976 2004-02-18
DE102004007976 2004-02-18

Publications (2)

Publication Number Publication Date
EP1566914A2 EP1566914A2 (en) 2005-08-24
EP1566914A3 true EP1566914A3 (en) 2011-05-04

Family

ID=34706842

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05100034A Withdrawn EP1566914A3 (en) 2004-02-18 2005-01-05 Method to improve the quality of a voice transmission over an air interface

Country Status (3)

Country Link
US (1) US20050180402A1 (en)
EP (1) EP1566914A3 (en)
CN (1) CN1330194C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7877674B2 (en) * 2006-07-25 2011-01-25 Broadcom Corporation Method and system for redundancy-based decoding of voice content in a wireless LAN system
US9369246B2 (en) * 2005-12-30 2016-06-14 Vtech Telecommunications Limited System and method of enhancing WiFi real-time communications
US8483679B2 (en) * 2008-09-09 2013-07-09 Avaya Inc. Sharing of electromagnetic-signal measurements for providing feedback about transmit-path signal quality
CN101962978A (en) * 2010-10-20 2011-02-02 同济大学 Shape memory alloy anchoring system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6282174B1 (en) * 1996-07-01 2001-08-28 Oki Electric Industry Co., Ltd. Mobile communication system
US20030189950A1 (en) * 2002-04-08 2003-10-09 Stephen Spear Optimization of a wireless interface based on communication type

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
US5625642A (en) * 1994-10-11 1997-04-29 Lucent Technologies Inc. Spread-response precoding system having signature sequences longer than the inter-symbol time interval
US5648969A (en) * 1995-02-13 1997-07-15 Netro Corporation Reliable ATM microwave link and network
US7058077B1 (en) * 1998-08-17 2006-06-06 Nortel Networks Limited Flexible frame structure for a CDMA wireless network
EP0999669A1 (en) * 1998-11-06 2000-05-10 Nortel Matra Cellular Method and apparatus for diversity reception of user messages with different forward error correction
US6574272B1 (en) * 1999-10-12 2003-06-03 Conexant Systems, Inc. Method and apparatus for passing interactive data over a modem link with low latency
US6545990B1 (en) * 1999-12-20 2003-04-08 Tantivy Communications, Inc. Method and apparatus for a spectrally compliant cellular communication system
EP1156617B1 (en) * 2000-05-17 2003-09-10 Matsushita Electric Industrial Co., Ltd. Hybrid ARQ method for packet data transmission
US7017102B1 (en) * 2001-12-27 2006-03-21 Network Equipment Technologies, Inc. Forward Error Correction (FEC) for packetized data networks
KR100446503B1 (en) * 2002-06-19 2004-09-04 삼성전자주식회사 Compound access point and method for managing voice/data packet using the access point
US20040092233A1 (en) * 2002-11-08 2004-05-13 Rudrapatna Ashok N. Variable rate closed loop power control for wireless communication systems
US20040219925A1 (en) * 2003-04-30 2004-11-04 Motorola, Inc. Image data transfer over a dispatch voice channel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6282174B1 (en) * 1996-07-01 2001-08-28 Oki Electric Industry Co., Ltd. Mobile communication system
US20030189950A1 (en) * 2002-04-08 2003-10-09 Stephen Spear Optimization of a wireless interface based on communication type

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
KAINDL M ET AL: "AMR voice transmission over mobile Internet", 2002 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING. PROCEEDINGS. (ICASSP). ORLANDO, FL, MAY 13 - 17, 2002; [IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP)], NEW YORK, NY : IEEE, US, vol. 2, 13 May 2002 (2002-05-13), pages II - 2049, XP010804303, ISBN: 978-0-7803-7402-7 *
WALLBAUM M ET AL: "Voice-data integration in wireless communication networks", VEHICULAR TECHNOLOGY CONFERENCE, 1999. VTC 1999 - FALL. IEEE VTS 50TH AMSTERDAM, NETHERLANDS 19-22 SEPT. 1999, PISCATAWAY, NJ, USA,IEEE, US, vol. 5, 19 September 1999 (1999-09-19), pages 2651 - 2655, XP010353385, ISBN: 978-0-7803-5435-7, DOI: 10.1109/VETECF.1999.800267 *

Also Published As

Publication number Publication date
EP1566914A2 (en) 2005-08-24
CN1330194C (en) 2007-08-01
US20050180402A1 (en) 2005-08-18
CN1658682A (en) 2005-08-24

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